Calling device.



W. KABHNG.

CALLING DEVICE. APPLICATION FILED JULY 9, 1910.

1/7/1211; 555-15 In ft'zz snicrr /6 Z ZII LIEI Z $5555.23?

W, KAISLING.

CALLING DEVICE.

APPLICATION FILED JULYQ, 1910.

sra rgs rarnr onrion.

WILLIAM KAISLING, F CHICAGO, ILLINOIS, ASSIGNOB. TO KELLOGG SWITCHBOARD AND SUPPLY CQMPANY, OF CHICAGO, ILLINQIS, A GORPORATIQN OF ILLINOIS.

CALLING DEVICE.

l b-(125 10720721 it may concern Be it known that I, lVILLIAM Kaisuivo, a citizen of the United States of America, residing in Chicago, county of Cook and a State of Illinois. have invented certain new andgjuseful Improvements in Calling Devices. of which thefifollowing is a specification.

. My invention relates to'calling devices of the type commonly employed in automatic and semi-automatic telephone systems for the purpose of operating directively .controlled associated switch mechanism.

My invention is particularly directed. to devices for controlling switch mechanism over a circuit by actuating. cotiperative contact springs..the object being to provide a "ailing device of this sort which is simple in construction and mostpositive and .etti- Q0 cient in operation. One of the features of my invention con sists in having a single mechanical movable stop adapted to cooperate with the dial so as to limit the movement of the said dial, 25.norresponding to the selected linger-hold. Thus I do not depend upon the contact be r tween the linger and a fixed stop for limiting the movement of the dial.

Another feature is to provide. mechanism adapted to be wound up or set by the for- I ward movement of the dial. to then restore the-dial and thereafter unlock the mechanism for transmitting impulses and hold the dial locked against further actuation until the impulses are transn'iitted. Thus,

the dial is restored back to normal each time it is actuated by the finger. I also provide means whereby the dial aft-er being operated is restoredat a high speed under the influonce of a governor and thereafter the impulse mechanism is operated at a relatively low speed under influence of the same gov- :.-.ernor. thereby gaining time by the quick return of the dial without the jar usually attendant where the dial is allowed to snap back.

There are many features and advantages in the structure herein described which will be better understood upon reference to the '5 following detailed description taken in connection with the accompanying drawings, and the scope of the invention will be particularly pointed out in the-appended claims.

Referring to the accompanying drawing in which like reference characters indicate.

Specification of ietters Patent.

Application file-i July 9,- 1310.

.9, The-clock spring 11-h=1s one end se-.'

Patented May 12), 1914. Serial No. 571,179.

.like parts. Figure 1 is a front view showing a dial of the calling device of my invention with part of the said dial broken away to show the movable mechanical stop which is adapted to-cooperate with the finger in the finger-hold to limit the movement of the dial. Fig. 2 is a rear elevation of the structure shown in Fig. 1; Fig. 3 is a view similar to that of Fig. 2 exceptthat the bridge plates and some of the mechanism have been removed to show some of the parts on the interior; Fig. is a bottom view of the structure shown in Fig. Fig. 5 is a top view of the structure shown in Fig. 2. leaving out some of the rear details; Fig. 6 is a right-hand ele 'ation of Fig. 13 leaving out some of the details; Fig. 7 is a rear elevation showing only the main shaft moved offnormal and with the link stop (55 engaging the impulse wheel 50; Fig. 8 is a view show- ,ing the cooperation between the latch 13 and catch arm 21 of the dial shaft. the said mechanism comprising the means forlocking the dial against actuation while the impulse mechanism is operating for transmitting impulses; Fig. 9 is a double scale section of the governor along the line 9-4) of Fig. 3;Fig. 10 is a perspective View of the unlatching arm; Fig. ll 'isa front view of a modification of the dial'shown in Fig. l and using a rotatable arnr-witha pin stop in place of the finger holds asused on the dial of Fig. 1; Fig. 12 is a left. endelevation of the dial shown in Fig. 11, the said dialbeing adapted to operate in connection with theanechanism of the structure shown in Figssl t o 10, inclusive; Fig. 13 is a side elevation of a desk telephone showing the calling device secured to the standard thereof; Fig. 14 is a front elevation of the securing plate shown in Fig. 9 13 with the calling device removed; Fig. 15 is a cross-section along the line 15, 15 of Fig. 14. looking in the direction indicated by the arrow; and Fig. 16 is a vertical cross-section 'means of the nut 9, the washer-1O being placed between the said dial 7-and thenut,

cured to the main shaft 8 and the other one. secured to the inner side of the drumplate 12. The said spring 11 is adapted to return he dial 7 to normal when it is actuated to set the impulse transmitting mechanism. The dial 7 has ten finger-holds 13 therein. For each finger-hold 13 there is a stop-pin 1-1 which is riveted to the dial 7. The laser-stop 15 is normally in the position shown by the full line, the said stop being piroted by the pin 16 to the front plate 1. The pin lfi'extends through the front. plate 1 and has a spring 17 passed through a hole in the said pin, the other end of the spring 1? heingwound around the separating stud 6.'

- pin 20, which is fixed to the trout plate 1.

Fastener]. to the main shaft Sis thecatch arm 21, the said arm 21 being movable with the main shaft 8 and the dial 7. The arm is also secured to the main shaft 8 by means of the set screw 23. Pivoted'to the arm 22 is the pawl 24-, the said pawl engaging teeth in the ratchet wheel 25, the said ratchet wheel being secured to the gear wheel 25. The gear wheel 25 is loose upon wheel 25which*is lopse'upon the shafte- 'lf-fimaiiis stationary 1w lie the dial 'q' 15 leemoved torwa rd as thepawl 2& is free;

the main shaft 8, the said gear Wheel connecting' the main shaft to the governor G when the said shaft 8 and dial 7 are restored after being actuated. This connecbetween the gear 25 and governor G is follows: The gear 25 13. in mesh with the idler 26. the said idler 26 being 111 mesh with the idler 2?. The idler is in mesh with the pinion 28, the said punch 28' and the gear wheel 29 being secured to the shaft 30. The gear 29 is in mesh with the pinion 31, the said pinion 31 bemg securedto the sha 32 oi the governor G. A small arrow is shown on e: ch one-of the gearwheels and inions. tile said arrow indicatin the di-- l rection of rotation of the respective gears and plnions when the dial is restored to normalor the impulse transmitting mechanism is operating for transmitting impulses. When the dial 7-1s actuated to set the 1mpulse transmitting mechanism, 1t.1s rotated in a clock-wise direction and when the finwithdrawn from the finger-hold, the Gilda s-restoredby'the spring" 11- under the influence of the governor. G-

:2 y masses to move over the teethof the ratchet wheel 25, but when the dial is released to restore, the said arm 22 and pawl 2+2 move in the direction indicated by the arrow thereon and the gear wheel 25 is carried along. The

said gear wheel 25 loeing connected to the governor G as previously descrihed, theiial is restored under influence of the, said gov ernor. The operation of the governor will be more fully understood by-a reference to the Fig. 9 in wh ch the main shaft is journaled between. the front plate 1 and the bridge 3. The disk 38 with its, sleeve is looseupon the shaft 32 and is held against the arms as of the weights by 'means of the springs 36. The saidarms' e rest in. a

slot in the end of the sleeve of disk The weights 35 are pivoted to the cross arm 3'7 by means of thepins 38, the-saidarmBT being riveted to the main shaft 32. Whenthe governor reaches a pre-determined speed the weights 35 moving outward force the disk 33 against the friction button 89.-

The drum-gear 10 is loose upon the sleeve extension of the main plate 1 as shown in Fig. 4. Inside of the said drum is a clockspring 11 having one end secured to the drum by means of a pin as shown in the cross-section; and the other end of the spring 41 is'secured to the sleeve of the plate 1. Screwed to the drum-gear -10 is the unlatohing arm &2, the said arm being adapted i the return of the drum to disengage the latch e3 from the catch arm 21 as shown in Fig. 8. This unlatching arm 42 also stop for, the gear drum 40, the

bent portion 44 engaging the arm 21. Drum 40 is under tension of the. spring 41 and the arm 42 being secured to the said drum to, the said arm2 rests against the catch arm 21, holdingdhe drum 40 in normal position. I

The gear 15 which is in mesh with the teeth of the drum-gear 40 is loose upon the shaft 46 The gear wheel a7 and the ratchet wheel 4C8 are secured together. and are also loose 'upoh the shaft ,46. The ratchet wheel 19 is securely fastened to the shaft 46 as is also the star or impulse wheel 50. The ratchet wheel 49 and impulse wheel 50 each have eleven teeth. As shown in Fig. 4 the pawl-51 is pivoted to the upper side or" the gear wheel 15 and the pawl 52 is pivoted to the lower side or" the gear wheel 15. The pawl 51 .is adapted to engage the teeth of the ratchet wheel 48 and a the pawl is adapted to engage the teeth of the ratchet wheel 49, the said pawls being held in engagement by their respective springs.

The impulsesprings 53"a'ndiii-i are mountedon the bracket 55, thesaid bracket being scoured at its leit, tgithe bridge plate 2'by means of a, screw and the right end of the mountinggloraclret is secured to the plate 2 by means of a screw 56 passing through a slot in the said plate 55. By means of this screw 56, the bracket may be adjusted, being moved toward or away from the impulse wheel 50 as desired, thereby adjusting the springs 53, 54. The'arm 57 having the. roller 58 journaled at one end is pivotally secured to the mounting bracket 55 by pin 59. The said arm 57 is held in engagement with the impulsewheel 50 due to the spring 60 which is riveted to the said arm 57 having its free end pressing against the bracket 55. Thus, when the impulse wheel 50is rotated in the direction of the arrow shown thereon, theteeth of the said impulse wheel vibrate the arm 57, the said arm on each' vibration engaging the insulating stud 61 which is fastened to the connection from the drum 40 to the governor G is as follows: The teeth of the gear drum "are in mesh with the gear 45, the said gear 45, due to its connection with the ratchet wheel 48 by means of the pawl 51, being adapted to rotate the gear 47 when the said gear drum 4G is restoring. The gear wheel 47 is in mesh with the small pinion 62, the said pinion and the gear 63 being secured to the shaft 64. The gear wheel 63 is in mesh with the pinion 28, the

said pinion 28 and the gear wheel 29 being both fastened to the shaft 30, the gear 29 being in mesh with the pinion 31 of the governor G as previously stated. Thus, it-will be seen that when the gear-drum 40 is restored in the direction indicated byjthean row thereon, its movementis -controlled by the governor G on account of the connections through the gears jjaist described.

The link-stop which is pivoted between the plates 2 and '3, is normally resting against the pin 66 on the arm 22.under tension of the spring 67. The other end of this link-stop 65 is normally out of engagement with the impulse wheel 50 ,as shown in Fig. 2, but when the dial is actuated the arm 22 and pin 66. are moved away from the link-stop as shown in F1g. 7 allowing the said stop 65 to engageatooth of the impulse wheel 50, This prevents the oper-- ation or rotation of the impulse wheel 50 while the dial is restoring. Vvhen the dial has restored to normal, the said link 65 1S engaged by the pin 66 and moved out of engagement with the said impulse wheel 50.

Having described in detail the construction yof -the'device of Figsalto 10, a description of the operation of the said calling device will now be entered into, and is as follows: Assuming the operator desires to open and close the contact springs 53 and 54 a single time, the finger is placed in thefinger-hold No. l and the dial 7 is rotated in a clockwise direction until the finger contacts with the lever stop 15 and continuing in its movement, moves the said lever to the position shown by the dotted line and placing the projection 18 in a position to engage the stop-pin 14 corresponding to the selected which engages the flange 44 on the unlatching arm 42, carries the said arm 42 around when the dial is actuated. The drum gear 40 being secured to the arm 42, is also carried along with the said arm 42, thereby rotating the gear-wheel 45 in a direction re verse to that indicated by the arrow thereon, and the pawls 51 and 52 slide over the teeth of their respective ratchet wheels 48 and 49, the pawl 52 moving over one tooth as only one impulse is to be transmitted. If more than one impulse-is. to be transmitted the pawl moves over a number of teeth in the ratchet wheel 49, corresponding to the number of impulses to be transmitted. The pawl 24 which is pivoted to the arm 22 also slidesover the teeth ofits ratchet wheel 25' without moving the gear wheel 25, when the dial is actuated. -The'dial 7 having been finger-hold and the dial is' restored by the clock spring 11, the st0ps 19 and 20 again As previously 1 coming into engagement. stated, the dial restores under the influence of the gover11o1',G,-it being geared to the said governor as follows: The gear 25 is carried along with the shaft'S in the restoration of the dial, duto the engagement of thepa wl 24 with its;ratchet Wheel 25,.and the gear 25 which is in mesh with the pinion 31 of the governor G through the two idlers 26 and 27, the pinion 28 and gear wheel 29 which are on the shaft 30. The drum-gear 40 does not restore with the dial, the arm 42' which is secured to gear 40; therefore of course also remaining in the position shown in Fig. 8, gear 40 being prevented tron) re storingon account of its being in mesh with the gear wheel 45, and the pawl 52 whiclr'is secured to the gear 45 is -in engagciii'ent with a tooth of the ratchet wheel 49. Tim said ratchet wheel-49 and the impulse wlheel -6 removal of the finger from the finger hold roeaeai' be unlocked and would then operate for transmitting impulses.

' Figs. 13 to 16 show the means for securing the calling device to a desk stand. The

' 5 plate 100 is adapted to receive the calling device by means of screws passing through the holes 101 and into the studs 4, 5 and 6.

The ring 162 is adapted to be clamped be tween the plates 1 and 100 to inclose the mechanism of the calling device. The band 108 is secured to the plate 100 by means of the screws 103. The said plate 100 is counter-sunk at an angle as shown in Fig. 16 and has a screw stud lO l threaded there in and engaging the washer 105. The screw stud 104 has a hole therethrough and is adapte'dto receive the connections from the contact springs of the calling device to pass therethrough and intov the hole 106 of the standof the desk telephone. The bracket is clamped to the desk stand by means of the screw 10a and washer 105. t will be M seen that by the use of this clamping bracket it=would be very convenient to remove the calling device from the desk telephone for repairs and replace it by another one, by

simply removing the screws 10?.

What I claim. as new and desire to secure- ;,."::by Letters Patent is:

I 0 1. In a. calling device, the combination with a movable member, of a finger-hold for actuating said member, a stop movable with said member, a movable lever, said lever being adapted to be engaged and moved by the finger to cooperate with said stop to limit-the movement of said member when said member is actuated, and means efiective -without necessitating the removal of the finger fromathe finger hold for thereafter restoringfsaid member.

2'. In 'a. calling device, with a movable member, of a finger-hold for actuating said member, a stop for said finger-hold, a movable lever, said lever being adapted to be engaged and moved by the finger when said member is actuated, means actuated responsive to the movement of said lever to engage said stop to limit the movement of said member, and means for there- "5 after restoring said member efiective without necessitating the removal of the finger from the finger hold.

3; In a calling device, the combination with a movable member, of a series of finv5 ger-holds for'actuating said member, a stop f for eachrof said finger-holds, a movable .leverf. said lever being adapted to be engaged and moved by the finger whensaid member is actuated, means actuated responsive to the movement of said lever to engage a stop corresponding to the selected fingerhold to limit the movement of said member,

and means for thereafter restoring said" member efifective without neoessitating-- th the combination 4;. In a calling device, the combination with a movable member, of finger-hold for actuatingsaid member, a movable lever, said lever being adapted to be engaged and is actuated, means actuated responsive to the movement of said lever, whereby the movement or said member is limited corresponding to the selected finger-hold, and means for thereafter restoring said member efi'ective without necessitating the removal of the fin ger from the finger hold.

6. 'In a calling device, the combination with a revoluble dial having a series of fin- I, ger-holds adapted to be engaged by the finger of the operator when used, of a stop for each finger-hold, a movable lever, said lever being adapted to be moved by the finger when the dial is operated, said lever engaging a stop corresponding to the selected'finger-hold, and means for thereafterrestoring said member effective without necessitating the removal of the finger from -the finger hold. w I

7. In a calling device, the combination with a movable member, of a finger-hold foiactuating said member. impulse transmit ting mechanism adapted to be adjusted for operation responsive to the movement of said member, means actuated by engagement with the finger in the finger-hold to limit the movement of said member, means for restoring said member, and means actuated upon restoration of said member, whereby said mechanism is subsequently operated...

8. In a calling device, the combination with a movable member, of a series of fingerholds for actuating said member, impulse transmitting mechanism adapted to be adjusted for operation responsive to the movement of said member, means actuated by engagement with the finger in a finger-hold to limit the movement of said member cor responding tothe selected hold, means-for restoring said member, and means actuated I 1.

upon restoration of said member, whereby said mechanism is subsequent yvopera-ted 9. In a calling device, the combmation With'a movable member. of a series of finger-holds for actuating said member, im- 7 pulse transmitting irechanism-adapted to be -adjnsted for operation responsive to the. movement of member, means has;

iting the movement of said member corre' sponding to the selected hold, means for restoring said member, and-means actuated upon restoration. of said member whereby said mechanism is subsequently operated.

1-0. In a calling device, the combination" with a movablemember, of a. sei'i es of finger-holds for actuating said member, mechanism adapted to be adjusted for operation responsive to the movement of saidmember, cooperating contacts, means actuated by engagement with the finger in a finger-hold to limit tlie'iriovement of said member, means ,fOI iestoring said member, and means actuated upon restoration of said member to subsequently operate said mechanism whereby said contacts-cooperate corresponding to the selected finger-hold. 1

11. In a calling device, the combination with a member-adapted to be moved to a I plurality of differentpositions, of means for stopping said member when moved, in any one of its positions, impulse transmitting mechanism adapted to be adjusted for operation responsive to the movement of saidmember, means for restoring said member,-' and means actuated upon restoration of said 111eiriber,;whereby said mechanism is subse quently operated.

, ,12. In a calling device, the combination with a movable member, of a series of fingerholds for actuating said member, mechanism adapted to be set for'operation responsive to themovement of said member, cooperative contacts, means actuated by engagement with the finger in. a finger-hold to limit the movement of said member, means for restoring said member, means actuated responsive to the restoration of said member to operate said mechanism, whereby said contacts cooperate corresponding to the locking said {member whiie said mechanism.

is operating for transmitting impulses.

1%. In a calling device, the combination with a manually operated movable member, of mechanism adjusted for-transmitting inipulses responsive to movement of said member, a speedgovernon means for restoring said member a. relatively high speed under influence ot's'aid governor, after said mechanism is adjusted, and means for thereafter 1 p mechanism at a' relatively operating saidr slow speed for transmitting. impulses/underinfluence of said governor.

15. In a calling device, the combmation w th a manually operated movable. member,

of mechanism adjusted for transmitting impulses responsive to. movement of said member. means for restoring said member ata" relatively high speed after said mechanism. is ad usted, and means torthereafter operating said mechanism at a relatively slowepeed for transmitting impulses.

16. A mounting device for impulse trans mitters comprising aniain securing plate a U-shaped band secured to said plate and adapted to encircle the standard or a desk telephone, and a clamping screw threaded into said main plate and adapted to engage said standard to hold said main plate in position. I j

1 7. In'a calling device, the combination with a movable member, of a finger hold for actuating said member, a stop for said member, a finger lever adapted to be engaged and moved by the fingerto cooperate with said stop to limit the movement of said nember when actuated and means for thereafter simultaneously starting the restoration of said member and finger lever. 18. In a calling device, the combination with aiiiovable member, of a series of finger holds for actuating said member, impulsev mechanism adapted to be'adjusted for operation responsive to a movement of said member, means actuated by engagement with the finger iii-a finger hold to l mit the movement of said member correspondingto the" selected finger hold, a catch for locking said mechanism in its ad usted position, means for restoring said 11l111b11 21fld means actu ated by the restoration of said member, to'

unlock said mechanism to operate.

, 19. A calling device comprising a 'inov-. able setting member having'a' plurality of finger holds for the actuation tliereo fia stop for each oi said finger holds, means for restoring said setting member when. actuated. a finger lever-adapted to be engaged by the finger when in, a selected finger hold and adapted to cooperate with said stops to limit the for 21rd movement of the setting member according to the selected hold, said stops andfinger lever being so cooperative whereby the restoring means for said setting-- member is made effective without ileQeSSltatiiig the removal of the finger from the finger hold. j Signed by me atChmago, county of (look,

and State of Illinois, in the presence of two witnesses.

ll 'itnesses' j Vii. Benssmnrn ldanaon n 'EQGRIER,

wiLL -a i KAI 

